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- Table of Contents
Plan ABCE1 paraffin-section IHC around general cytoplasmic staining, using high-staining colon glandular cells as a reference (HPA tissue IHC). This guide covers fixation consistency, antigen retrieval and chromogenic detection using the catalog antibody’s IHC conditions (datasheet A04173).
Expected localisation, validated protocols, controls and antibodies — the at-a-glance facts below, then the full design guide.
| Expected localisation | Cytoplasmic tissue staining (HPA tissue IHC); mitochondrial location annotated (UniProt) | |
| Staining pattern | Cytoplasm in glandular, hematopoietic and neuronal cells (HPA tissue IHC) | |
| Antigen retrieval | EDTA pH 8.0 HIER, heat-mediated (datasheet A04173) | |
| Positive control | Appendix+4 more · see all | |
| Negative control | Skeletal muscle |
| Fixation | Keep fixation consistent across sections (standard IHC practice; not target-specific); Matched tissue-IHC evidence does not establish the fixation claim. Validate the specimen-specific method before use. (selected-SKU IHC image A04173) | |
| Caveat | Broad cytoplasmic staining may limit cell-specific contrast (HPA tissue IHC) | |
| Regulation | No expression regulation annotated (UniProt) | |
| Isoform / epitope | No annotated isoforms or cleavage; no extracellular domain (UniProt) |
The catalog antibody has a datasheet IHC-P protocol (datasheet A04173). Two published ABCE1 tissue protocols provide additional conditions (PMC6125957; PMC4148363).
| Sample | Paraffin-embedded mouse brain tissue; fixative not specified (datasheet A04173) |
| Fixation | Image fixative and duration unreported (datasheet A04173); verify before use. |
| Sectioning | 4–5 µm sections on charged slides (standard) |
| Deparaffinisation | Xylene, graded ethanol series to water (standard) |
| Antigen retrieval | Heat retrieval: EDTA pH 8.0 (datasheet A04173); 20 min, 95–100 °C (standard) |
| Peroxidase block | 3% H2O2, 10 min, room temperature (standard) |
| Blocking | 10% goat serum (datasheet A04173) |
| Primary antibody | Rabbit anti-ABCE1, 2-5 μg/ml (datasheet A04173) |
| Primary incubation | Overnight at 4 °C (datasheet A04173) |
| Detection | HRP-conjugated secondary, DAB chromogen (datasheet A04173) |
| Counterstain | Hematoxylin, blue, dehydrate and mount (standard) |
| Expected result | ABCE1-positive staining in glandular cells of appendix (HPA tissue IHC: High). HPA tissue profile: General cytoplasmic expression. No signal in the no-primary control. |
ABCE1 should appear predominantly in the cytoplasm of many cell types, with strong IHC staining reported in glandular, hematopoietic and neuronal cells (HPA: general cytoplasmic expression; HPA: High in the listed cells). Cytosolic localisation is also supported by ICC-IF (HPA: Cytosol, enhanced). UniProt lists cytoplasm and mitochondrion and reports no transmembrane segment (UniProt P61221: subcellular location and topology). HPA rates the tissue IHC profile Approved, with medium consistency against RNA expression (HPA: reliability).
| Clear cytoplasmic staining in appendix, breast, colon or duodenal glandular cells. | This matches reported High staining in those cells (HPA: tissue IHC). Assess the cell type and compartment together; cytoplasmic colour alone is less informative when nearby cells also stain. |
| Predominantly nuclear, membranous or extracellular staining, with little cytoplasmic signal. | This departs from the reported general cytoplasmic pattern and cytosolic ICC-IF localisation (HPA: tissue IHC; HPA: subcellular). Treat the compartment mismatch as a possible staining artefact and check the controls before interpreting it as ABCE1. |
| Strong colour in skeletal muscle myocytes, especially if other expected cells are unstained. | Myocytes were not detected in the reported skeletal muscle IHC profile (HPA: tissue IHC). Unexpected staining can reflect cross-reactivity or endogenous detection activity (general IHC practice); it does not by itself establish a new ABCE1 pattern. |
| Diffuse colour covers tissue and empty regions without distinct cellular boundaries. | That pattern cannot be assigned confidently to the reported cytoplasmic signal (HPA: tissue IHC). Background from nonspecific antibody binding or detection reagents is a general IHC possibility; compare the test slide with appropriate reagent controls (general IHC practice). |
| No signal in glandular cells of appendix or colon while counterstained tissue remains visible. | Those cells are reported as High in HPA tissue IHC, so absence of staining calls for a technical check (HPA: tissue IHC). HPA's Approved rating has only medium consistency with RNA data; a single negative section is not conclusive (HPA: reliability). |
| Choice of tissue and cell type | HPA reports High staining in several glandular, hematopoietic and neuronal populations, Low staining in smooth muscle cells, fibroblasts and adipocytes, and not detected in skeletal muscle myocytes (HPA: tissue IHC). Score identified cells rather than treating an entire section as uniformly positive. |
| Strength of IHC evidence | The tissue profile is Approved but has medium consistency between antibody staining and RNA expression (HPA: reliability). CAB012476 is IHC Approved; HPA036846 has no listed IHC status (HPA: antibodies). Interpret an unexpected result with that validation limit in mind. |
| ABCE1 location and topology | UniProt lists cytoplasm and mitochondrion and no transmembrane segment (UniProt P61221: subcellular location; topology). HPA describes general cytoplasmic IHC staining (HPA: tissue IHC). These records support a cytoplasmic reading but do not establish a distinct mitochondrial IHC pattern. |
| What should IF/ICC show? | Expect cytosolic signal: HPA lists Cytosol as the enhanced main location and no additional location (HPA: subcellular ICC-IF). That observation supports the compartment call here; IF/ICC experimental setup belongs to its separate guide. |
| Situation | Likely cause | Next action |
|---|---|---|
| A reported positive section has no ABCE1 colour. | A staining or detection step may have failed (general IHC practice); HPA reports High staining in appendix and colon glandular cells (HPA: tissue IHC). | Check tissue identity, control staining and the catalog antibody's IHC-P instructions. Review retrieval, antibody incubation and detection steps as general IHC checks; no ABCE1-specific retrieval condition is established by the supplied sources. |
| Signal is weak in an adipocyte, fibroblast or smooth muscle cell. | Those cell types are listed as Low rather than High (HPA: tissue IHC). | Compare with a reported High cell population on a suitable section before increasing signal amplification. Record cell type and relative intensity so a biologically low result is not scored as assay failure. |
| Strong nuclear staining dominates an otherwise readable section. | Nuclear dominance conflicts with HPA's cytoplasmic IHC profile and cytosolic ICC-IF location (HPA: tissue IHC; HPA: subcellular). | Check localisation in a reported positive tissue and compare reagent controls. Reassess antibody dilution and detection background under general IHC practice before calling the nuclear colour ABCE1. |
| Muscle myocytes show strong staining. | HPA reports skeletal muscle myocytes as not detected (HPA: tissue IHC). Cross-reactivity or endogenous detection activity is possible (general IHC practice). | Inspect the matched negative reagent control and confirm that the coloured structures are myocytes. Compare with a reported positive cell population before accepting this as an ABCE1 result. |
| Diffuse colour obscures cellular localisation. | Nonspecific binding or detection background can obscure a specific chromogenic signal (general IHC practice). | Review blocking, antibody dilution and wash conditions, and compare detection controls (general IHC practice). Score ABCE1 only where cell boundaries permit a cytoplasmic call (HPA: general cytoplasmic expression). |
| A negative section is being used to rule out ABCE1 across a tissue. | HPA levels refer to specified cell types; skeletal muscle myocytes are not detected, whereas several glandular and neuronal populations are High (HPA: tissue IHC). | Identify and score the relevant cell population. Use a reported High population as a positive comparator, and describe a negative result within the tested section and assay rather than extending it to all tissues. |
Comprehensive Human Protein Atlas IHC scoring per tissue (reliability: Approved — Medium consistency between antibody staining and RNA expression data.). Rows are taken directly from the HPA tissue chart — click any row's HPA link to view the source.
| Tissue | Cell type | Level | Evidence | Source |
|---|---|---|---|---|
| Appendix | Glandular cells | High | Protein (IHC) | HPA → |
| Bone marrow | Hematopoietic cells | High | Protein (IHC) | HPA → |
| Breast | Glandular cells | High | Protein (IHC) | HPA → |
| Cerebellum | Purkinje cells | High | Protein (IHC) | HPA → |
| Cerebral cortex | Neuronal cells | High | Protein (IHC) | HPA → |
| Tissue | Cell type | Level | Evidence | Source |
|---|---|---|---|---|
| Skeletal muscle | Myocytes | Not detected | Protein (IHC) | HPA → |
Troubleshoot ABCE1 staining in paraffin sections by checking retrieval, cytoplasmic localisation, controls and cell based scoring before interpreting differences.
ABCE1 images show paraffin-section IHC in mouse and rat brain and human testis (A04173 IHC captions), plus IF/ICC in HeLa cells (A04173 and PB10020 IF captions).
A04173 will render with a mouse brain paraffin-section IHC figure; its other IHC captions show rat brain and human testis (A04173 IHC captions). PB10020 will render with an IF/ICC figure from HeLa cells (PB10020 IF caption).
Which to pick: Choose A04173 for tissue IHC: its captions document paraffin sections with EDTA retrieval at pH 8.0, while the fixative is unreported (A04173 IHC captions). Choose PB10020 for IF/ICC when an IF figure is the priority; its HeLa-cell caption documents that application, and its application list does not include IHC (PB10020 IF caption; PB10020 applications). For work across species, A04173 lists human, mouse and rat reactivity and has IHC captions for all three; PB10020 lists the same reactivity but has only a human-cell IF figure (A04173 and PB10020 catalog reactivity; A04173 IHC captions; PB10020 IF caption).